People's interests in wines vary. Some of your guests prefer flashier extravagant cocktails, while others will refuse to drink anything but wine. It's an easy enough request to fulfill: Pop the cork and pour. Your challenge lies in making sure people are given a choice to fit their mood. If you're serving wine at a party, you should have at least two options each for red and white wine. For a seated dinner, you can just pair wine with food and worry less about choices.
Along with your wine collection, don't forget to keep a few bottles of dry champagne, which is a useful mixer for mimosas and spritzers. As with scotch, always keep a bottle of the best wine out of reach until a special occasion rolls around.